High Purity Dead Burnt Magnesite - Raw Materials for Refractory

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Specifications

Dead burnt magnesite is produced with selected natural magnesite through purifying calcining in shaft kiln.

Dead Burnt Magnesite

1. Introduction:

Particle Size : 0-1mm 1-3mm 3-5mm 1-10mm 100 mesh 200 mesh 250 mesh

Product usage: Mainly used in producing common magnesite brick, magnesite aluminum brick, magnesite chrome brick, gunning mix, hot patching mix for converter and EAF ect .

Product Advantage: Dead burnt magnesite are selected natural magnesite, it is produced by mine-selecting, purifying, calcimine in shaft kiln. It is an ideal material for unshaped refractory material, the final products are used in open hearth furnace, electric furnace bottom and furnace's lining tamping.

2. Specification:

BRAND	SPECIFICATION
BRAND	MgO≥	SiO2≤	Fe2O3≤	AL2O3≤	CaO≤	LOI≤	B·D≥(g/cm)
DBM-93	93	3.0	1.2	0.8	2.0	0.5	3.18
DBM-92	92	3.5	1.4	1.0	2.3	0.5	3.15
DBM-91	91	3.8	1.5	1.2	2.4	0.5	3.18
DBM-90	90	4.0	1.6	1.4	2.5	0.5	3.17
DBM-89	89	5.5	2.0	1.6	2.5	0.7	3.15
DBM-88	88	6.0	2.0	1.7	3.0	0.7	3.13
DBM-87	87	7.0	2.0	1.8	3.0	0.7	3.10

Q: what is best for making refractory insulation for Blast furnace, hot stove.: clay brick, insulating brick can endure relatively high temperature and last longer than the general fireproof fiber.

Q: What are the fire protection standards of insulation materials?: The combustion performance of thermal insulation materials for exterior walls of all civil buildings, within the scope of fire design auditing and fire control acceptance, should be brought into the auditing and acceptance. As for the "Management Regulations on Supervisions of Fire Prevention and Control for Building Projects" (Ministry of Public Order No. 106) , all civil buildings which are out of the scope of Article 13 and 14 are included in the random check. Before the release of new standard, it must be strictly implemented the Article II of the "Fire prevention Interim Provisions on civil external wall insulation system and external wall decorative" ([2009] No. 46), namely, the insulation materials of civil buildings must use materials with A-level combustion performance.

Q: Can quantitative feeder be used in refractory plant? Thank you: Well, can the Weifang Sanyou automation equipment production chain plate feeder is fully applicable to the measurement and control of boring high temperature, chain plate feeder with 16 4-5MM manganese plate.

Q: Who can tell me about the foundry refractory materials?: Such as: neutral, alkalic, acidic refractories. Of course, the raw materials of different materials are not the same. Such as: the magnesia-carbon bricks, basic refractory materials: magnesite(electric?smelting, high-purity)+ crystalline flake graphite+ phenolic resin+ additive (aluminate or silicon powder or silicon carbide powder or high-temperature pitch) and so on.

Q: What parts of cement kilns are refractories used on?: These parts are decomposition furnace, smoke chamber, kiln, kiln hood, grate?cooler, tertiary air duct and coal pipe.

Q: What material is used for making refractory stone bowl?: It can be natural stone or synthetic material (referred to as synthetic stone). If chosen improperly, some natural stones will separate out the minerals which cause gastrointestinal discomfort on sensitive people. Synthetic material has great output with relatively high safety and it is stronger than ceramic casserole. Now stone pot of synthetic material is mainly used in South Korea.

Q: What is the biggest difference between refractory bricks and clay refractory bricks? Where can I find information on the refractory bricks?: You can look up knowledge manual of refractory material to find phosphatic material, etc. Xinjiang refractory bricks, castable refractory, refractory material, silicious, corundum and alumina-magnesia: High alumina and clay refractory bricks can be divided into

Q: Are there any differences between insulation and refractory materials ?: First, refractory materials can resist more than 1200 degrees, some of which are not insulation materials, such as firebricks, which can directly contact with heat source, has little insulation effect. Ceramic fiber, high silica, etc. are all refractory materials which can insulate. Second, insulation materials with poor performance usually is lower than 800 degrees, which have large thermal resistance, and low thermal conductivity, high porosity. Thus they reduce the thermal loss. To put it simply, insulation materials store most of the heat and only let a small part of heat lose through the air, thus the heat has been isolated. Glass fiber, rock wool, flexible material for thermal insulation, etc.

Q: Is it necessary for the frame of glass fireproof door to be crammed with fire-proof material?: Fire resistance steel door——means that use a cold rolled steel sheet as door frame, door plank and framework, and stuff a door leaf with incombustible material.

Q: What is refractory?: Refractory materials are widely used in metallurgy, machinery manufacturing, chemical industry, petroleum, power and other industrial fields. It is an inorganic nonmetallic material mostly used in metallurgical industry with the minimum refractoriness of 1580 ℃, able to resist high temperature without softening (annealing). It accounts for 50% to 60% in total output. Refractoriness refers to refractory's ability to resist fire.

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